Home / 128,947,968.70-193,421,953.05-117,043,690.30

Finding the Fourth Proportional to 128,947,968.70, 193,421,953.05 and 117,043,690.30

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Solution

The fourth proportional to 128,947,968.70, 193,421,953.05 and 117,043,690.30 is: 175,565,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,947,968.70 : 193,421,953.05 = 117,043,690.30 : x
  2. Step 2: Convert to fraction form
    128,947,968.70/193,421,953.05 = 117,043,690.30/x
  3. Step 3: Cross multiply
    128,947,968.70x = 193,421,953.05 × 117,043,690.30
  4. Step 4: Simplify right side
    128,947,968.70x = 22,638,819,170,005,340
  5. Step 5: Solve for x
    x = 22,638,819,170,005,340/128,947,968.70
  6. Step 6: Final answer
    x = 175,565,535.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.